Texas Instruments PT5109N, PT5110A, PT5110C, PT5110N, PT5101S Datasheet

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PT5100 Series

1 AMP POSITIVE STEP-DOWN
INTEGRATED SWITCHING REGULATOR

Application Notes

Mechanical Outline

Product Selector Guide

Revised 5/15/98

• 85% Efficiency

• Internal Short-Circuit Protection

• Pin-Compatible with 3-Terminal

Linear Regulators

• Laser-Trimmed Output Voltage

• Over-Temperature Protection

• Small Footprint

• Wide Input Range

use, 1 Amp positive step-down, 3-ter­minal Integrated Switching Regulators
(ISRs) designed for pin compatibility
with linear regulators. These ISRs can
be used in a wide variety of on-board
power regulation applications including
computer, data storage, industrial con­trols, medical, and battery powered
equipment. The series of ISRs has ex-

Standard Application

Vin

1

PT5100

C1

C1 = Optional 1µF ceramic
C2 = Required 100µF electrolytic

2

The PT5100 Series is Power

Trends’ line of economical, easy-to-

Pin-Out Information

Pin Function

1
2
3

Vout

3

+

C2

COMCOM

V

in

GND
V

out

Pkg Style 100

Ordering Information

PT5101¨ = + 5 Volts
PT5102¨ = + 12 Volts
PT5103¨ = + 3.3 Volts
PT5105¨ = + 6.5 Volts
PT5107¨ = + 15 Volts
PT5109¨ = + 5.6 Volts
PT5110¨ = + 9 Volts
PT5111¨ = + 10 Volts
PT5112¨ = + 8 Volts

cellent line and load regulation and
laser-trimmed output voltage.

PT Series Suffix

Case/Pin
Configuration

Vertical Through-Hole N
Horizontal Through-Hole A
Horizontal Surface Mount C

(PT1234X)

Specifications

Characteristics
(Ta =25°C unless noted) Symbols Conditions Min Typ Max Units

Output Current I
Short Circuit Current I
Input Voltage Range V

Output Voltage Tolerance ∆V

Line Regulation Reg
Load Regulation Reg
Vo Ripple/Noise V
Transient Response t

with Co = 100µF V
Efficiency η Vin=9V, Io=0.5A, Vo=3.3V — 82 — %

Switching Frequency ƒ

Absolute Maximum T
Operating Temperature Range

Recommended Operating T
Temperature Range (40-60LFM) V

Thermal Resistance

Storage Temperature T
Mechanical Shock Per Mil-STD-883D, Method 2002.3

Mechanical Vibration Per Mil-STD-883D, Method 2007.2

Weight — 4.5 — grams
* ISR will operate down to no load with reduced specifications.

**See Thermal Derating chart.

Note:

The PT5100 Series requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications.

o

sc

in

o

line

load

n

tr

os

o

a

a

θ

ja

s

Over Vin range 0.1* — 1.0 A

min — 3.5 — Apk

Vin = V

in

0.1 ≤ Io ≤ 1.0 A V
V
V
V

Over Vin Range, Io = 1.0 A
T

= 0°C to +60°C

a

Over Vin range — ±0.5 ±1.0 %V

0.1 ≤ Io ≤ 1.0 A — ±0.5 ±1.0 %V
Vin=V
25% load change — 100 200 µSec

Vo over/undershoot — 5.0 — %V

=9V, Io=0.5A, Vo=5V — 85 — %

V

in

=16V, Io=0.5A, Vo=12V — 90 — %

V

in

Vin=19V, Io=0.5A, Vo=15V — 92 — %
Over Vin and Io ranges, Vo= 3.3V 575 725 875

Free Air Convection, Vo= 3.3V -20 — +80**

At Vin= 24V, Io=0.75A Vo= 12V -20 — +80**
Free Air Convection V

(40-60LFM) V

1 msec, Half Sine, mounted to a fixture

20-2000 Hz, Soldered in a PC board

=1.0 A — ±2 — %V

min, I

in

o

= 3.3V 9 — 26 V

o

= 5V 9 38 V

o

= 12V 16 38 V

o

= 15V 19 38 V

o

= >5V 500 650 800

V

o

= 5V -20 — +80** °C

o

= 3.3V — 45 —

o

= 5V — 50 — °C/W

o

V

= 12V/15V — 60 —

o

PT5100 SERIES

— ±1.5 ±3.0 %V

-20 — +85 °C

-40 — +125 °C

— 500 — G’s

—5 —G’s

o

o

o

o

o

kHz

4

Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 [phone] Fax: [phone] http://www.powertrends.com

For assistance or to order, call [phone]

PT5100

Series

CHARACTERISTIC DATA

PT5103, 3.3 VDC (See Note 1) PT5101, 5.0 VDC (See Note 1) PT5102, 12.0 VDC (See Note 1)

Efficiency vs Output Current Efficiency vs Output Current

100

90

80

70

Efficiency - %Ripple-(mV)Iout-(Amps)PD-(Watts)

60

50

40

0 0.2 0.4 0.6 0.8 1

Iout-(Amps)

Vin

9.0V

12.0V

18.0V

24.0V

26.0V

90
85
80
75
70
65
60

Efficiency - %

55
50
45
40

0 0.2 0.4 0.6 0.8 1

Iout-(Amps)

Ripple vs Output Current Ripple vs Output Current

60

50

40

30

20

10

0

0 0.2 0.4 0.6 0.8 1

Iout-(Amps)

Vin

26.0V

24.0V

18.0V

12.0V

9.0V

120

100

80

60

40

Ripple-(mV)

20

0

0 0.2 0.4 0.6 0.8 1

Iout-(Amps)

Vin

9.0V

12.0V

18.0V

24.0V

30.0V

38.0V

Vin

38.0V

30.0V

24.0V

18.0V

12.0V

9.0V

Efficiency vs Output Current

100

90

80

70

Efficiency - %

60

50

40

0 0.2 0.4 0.6 0.8 1

Iout-(Amps)

Ripple vs Output Current

250

200

150

100

Ripple-(mV)Iout-(Amps)

50

0

0 0.2 0.4 0.6 0.8 1

Iout-(Amps)

Wide Input Range Products

DATA SHEETS

Vin

16.0V

20.0V

24.0V

30.0V

35.0V

38.0V

Vin

38.0V

35.0V

30.0V

24.0V

20.0V

16.0V

Thermal Derating (Ta) (See Note 2) Thermal Derating (Ta) (See Note 2)

1

0.8

0.6

0.4

0.2

0

7 9 11 13 15 17 19 21 23 25 27

85°C

70°C

1

0.8

0.6

0.4

Iout-(Amps)

0.2

0

7 1115192327313539

70°C

85°C

50°C

60°C

Thermal Derating (Ta) (See Note 2)

1

0.8

0.6

0.4

0.2

0

15 17 19 21 23 25 27 29 31 33 35 37 39

Vin-(Volts) Vin-(Volts)Vin-(Volts)

Power Dissipation vs Output Current Power Dissipation vs Output Current

1.2

1

0.8

0.6

0.4

0.2

0

0 0.2 0.4 0.6 0.8 1

Vin

26.0V

24.0V

18.0V

12.0V

9.0V

1.8

1.6

1.4

1.2

1

0.8

PD-(Watts)

0.6

0.4

0.2

0

0 0.2 0.4 0.6 0.8 1

Vin

38.0V

30.0V

24.0V

18.0V

12.0V

9.0V

Power Dissipation vs Output Current

2.4

2

1.6

1.2

PD-(Watts)

0.8

0.4

0

0 0.2 0.4 0.6 0.8 1

Iout-(Amps) Iout-(Amps) Iout-(Amps)

Note 1: All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25°C. This data is considered typical data for the ISR.
Note 2: Thermal derating graphs are developed in free air convection cooling of 40-60 LFM. (See Thermal Application Notes.)

85°C

70°C

60°C

50°C

Vin

38.0V

35.0V

30.0V

24.0V

20.0V

16.0V

Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 [phone] Fax: [phone] http://www.powertrends.com

5